Short answer: All four labels say room temperature and none gives a fridge instruction. Lomaira and diethylpropion say 68° to 77°F with no excursion range; diethylpropion adds keep tightly closed and protect from excessive heat. Phendimetrazine allows excursions to 59° to 86°F. Xenical section 16 says 77°F with excursions to 59° to 86°F, while its Patient Information says 59°F to 86°F, in a tightly closed container.
Lomaira is an 8 mg phentermine tablet, diethylpropion and phendimetrazine are older appetite-suppressant tablets, and Xenical is an orlistat capsule. The generic diethylpropion and phendimetrazine labels used here are repackager labels; other makers carry their own.
| Product | Temperature | Excursions | Container and other | Patient leaflet |
|---|---|---|---|---|
| Lomaira (phentermine 8 mg), CIV | 20° to 25°C (68° to 77°F) | Not stated | Dispense in a tight container as defined in the USP, with a child-resistant closure (as required) | None in this label |
| Diethylpropion 25 mg, CIV | 20 to 25°C (68 to 77°F) | Not stated | Keep tightly closed. Protect from excessive heat. | None in this label |
| Phendimetrazine 35 mg, CIII | 20° to 25°C (68° to 77°F) | Between 15° to 30°C (59° to 86°F) | Not stated | None in this label |
| Xenical (orlistat 120 mg) | Section 16: 25°C (77°F) | To 15° to 30°C (59° to 86°F) | Keep bottle tightly closed | Store at 59°F to 86°F (15°C to 30°C), in a tightly closed container |
Light and moisture are not stated on any of the four. None gives a refrigerator instruction.
Xenical’s two sections disagree as printed: section 16 sets 77°F (25°C) with excursions to 59° to 86°F, while the Patient Information gives the whole 59°F to 86°F range as the storage range.
Lomaira and diethylpropion are Schedule IV and phendimetrazine is Schedule III, per their labels. None of the three labels gives a lock-up, storage or disposal instruction tied to that schedule. The phendimetrazine label prints “DEA Order Form Required.” under its storage line, which is about how pharmacies order it, not how you store it.
For the newer weight loss pills, see Qsymia and Contrave.
Dosing: Lomaira, diethylpropion, phendimetrazine and Xenical. Missed a dose: Xenical. Side effects: Lomaira, diethylpropion, phendimetrazine, Xenical. Comparisons: Lomaira vs Qsymia, diethylpropion vs phentermine, phendimetrazine vs diethylpropion, phendimetrazine vs phentermine, Xenical vs Qsymia and Xenical vs Wegovy. Molecules: phentermine and orlistat.
No ice pack is needed. Keep them in the labeled pharmacy bottle in your carry-on and out of a hot car. Lomaira and diethylpropion give 68° to 77°F with no excursion range, so avoid long spells outside it; diethylpropion also says protect from excessive heat. Keep the diethylpropion and Xenical bottles tightly closed.